package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.context.BaseContext;
import com.sky.dto.*;
import com.sky.entity.*;
import com.sky.exception.AddressBookBusinessException;
import com.sky.exception.OrderBusinessException;
import com.sky.mapper.*;
import com.sky.result.PageResult;
import com.sky.service.OrderService;
import com.sky.utils.HttpClientUtil;
import com.sky.utils.WeChatPayUtil;
import com.sky.vo.OrderPaymentVO;
import com.sky.vo.OrderStatisticsVO;
import com.sky.vo.OrderSubmitVO;
import com.sky.vo.OrderVO;
import lombok.SneakyThrows;
import lombok.extern.slf4j.Slf4j;
import org.codehaus.jettison.json.JSONException;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.CollectionUtils;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

@Service
@Slf4j
public class OrderServiceImpl implements OrderService {
    @Autowired
    private OrderMapper orderMapper;
    @Autowired
    private OrderDetailMapper orderDetailMapper;
    @Autowired
    private AddressBookMapper addressBookMapper;
    @Autowired
    private ShoppingCartMapper shoppingCartMapper;
    @Autowired
    private UserMapper userMapper;
    @Autowired
    private WeChatPayUtil weChatPayUtil;

    @Value("${sky.shop.address}")
    private String shopAddress;
    @Value("${sky.baidu.ak}")
    private String ak;

    @Transactional
    public OrderSubmitVO submitOrder(OrdersSubmitDTO ordersSubmitDTO){
        log.info("用户下单：{}", ordersSubmitDTO);
        Long addressBookId = ordersSubmitDTO.getAddressBookId();
        AddressBook byId = addressBookMapper.getById(addressBookId);
        if (byId == null) {
            throw new AddressBookBusinessException(MessageConstant.ADDRESS_BOOK_IS_NULL);
        }

        //检查用户的收货地址是否超出配送范围
        checkOutOfRange(byId.getCityName() + byId.getDistrictName() + byId.getDetail());

        ShoppingCart shoppingCart = new ShoppingCart();
        Long currentId = BaseContext.getCurrentId();
        shoppingCart.setUserId(currentId);
        List<ShoppingCart> shoppingCartlist = shoppingCartMapper.list(shoppingCart);
        if (shoppingCartlist == null || shoppingCartlist.size() == 0) {
            throw new AddressBookBusinessException(MessageConstant.SHOPPING_CART_IS_NULL);
        }

        Orders orders = new Orders();
        BeanUtils.copyProperties(ordersSubmitDTO, orders);
        orders.setUserId(currentId);
        orders.setOrderTime(LocalDateTime.now());
        orders.setPayStatus(orders.UN_PAID);
        orders.setStatus(orders.PENDING_PAYMENT);
        orders.setNumber(String.valueOf(System.currentTimeMillis()));
        orders.setPhone(byId.getPhone());
        orders.setConsignee(byId.getConsignee());

        orderMapper.insert(orders);

        List<OrderDetail> list = new ArrayList<>();
        for (ShoppingCart cart : shoppingCartlist) {
            OrderDetail orderDetail = new OrderDetail();
            BeanUtils.copyProperties(cart, orderDetail);
            orderDetail.setOrderId(orders.getId());
            list.add(orderDetail);
        }
        orderDetailMapper.insertBatch(list);

        shoppingCartMapper.deleteByUserId(currentId);

        OrderSubmitVO orderSubmitVO = OrderSubmitVO.builder()
                .id(orders.getId())
                .orderNumber(orders.getNumber())
                .orderTime(orders.getOrderTime())
                .orderAmount(orders.getAmount())
                .build();
        return orderSubmitVO;

    }
    public OrderPaymentVO payment(OrdersPaymentDTO ordersPaymentDTO) throws Exception {
        // 当前登录用户id
//        Long userId = BaseContext.getCurrentId();
//        User user = userMapper.getById(userId);
//
//        //调用微信支付接口，生成预支付交易单
//        JSONObject jsonObject = weChatPayUtil.pay(
//                ordersPaymentDTO.getOrderNumber(), //商户订单号
//                new BigDecimal(0.01), //支付金额，单位 元
//                "苍穹外卖订单", //商品描述
//                user.getOpenid() //微信用户的openid
//        );
//
//        if (jsonObject.getString("code") != null && jsonObject.getString("code").equals("ORDERPAID")) {
//            throw new OrderBusinessException("该订单已支付");
//        }
//
//        OrderPaymentVO vo = jsonObject.toJavaObject(OrderPaymentVO.class);
//        vo.setPackageStr(jsonObject.getString("package"));
//
//        return vo;
        log.info("跳过wx支付");
        paySuccess(ordersPaymentDTO.getOrderNumber());
        return new OrderPaymentVO();
    }

    /**
     * 支付成功，修改订单状态
     *
     * @param outTradeNo
     */
    public void paySuccess(String outTradeNo) {

        // 根据订单号查询订单
        Orders ordersDB = orderMapper.getByNumber(outTradeNo);

        // 根据订单id更新订单的状态、支付方式、支付状态、结账时间
        Orders orders = Orders.builder()
                .id(ordersDB.getId())
                .status(Orders.TO_BE_CONFIRMED)
                .payStatus(Orders.PAID)
                .checkoutTime(LocalDateTime.now())
                .build();

        orderMapper.update(orders);
    }

    /**
     * 用户端订单分页查询
     *
     * @param pageNum
     * @param pageSize
     * @param status
     * @return
     */
    public PageResult pageQuery4User(Integer pageNum, Integer pageSize, Integer status) {
        PageHelper.startPage(pageNum, pageSize);

        OrdersPageQueryDTO ordersPageQueryDTO = new OrdersPageQueryDTO();
        ordersPageQueryDTO.setUserId(BaseContext.getCurrentId());
        ordersPageQueryDTO.setStatus(status);

        Page<Orders> page = orderMapper.pageQuery(ordersPageQueryDTO);
        List<OrderVO> list = new ArrayList<>();
        if (page != null && page.getTotal()>0){
            for (Orders orders : page) {
                OrderVO orderVO = new OrderVO();
                BeanUtils.copyProperties(orders, orderVO);
                List<OrderDetail> byOrderId = orderDetailMapper.getByOrderId(orders.getId());
                orderVO.setOrderDetailList(byOrderId);
                list.add(orderVO);
            }
        }
        return new PageResult(page.getTotal(), list);
    }

    public OrderVO getById(Long id) {
        log.info("查询订单：{}", id);
        Orders orders = orderMapper.getById(id);
        List<OrderDetail> byOrderId = orderDetailMapper.getByOrderId(orders.getId());
        OrderVO orderVO = new OrderVO();
        BeanUtils.copyProperties(orders, orderVO);
        orderVO.setOrderDetailList(byOrderId);

        AddressBook byId = addressBookMapper.getById(orders.getAddressBookId());
        String provinceName = byId.getProvinceName();
        String cityName = byId.getCityName();
        String districtName = byId.getDistrictName();
        String detail = byId.getDetail();
        String s = provinceName.toString() + cityName.toString() + districtName.toString() + detail.toString();
        orderVO.setAddress(s);
        return orderVO;
    }

    public void cancel(Long id) throws Exception {
        log.info("取消订单：{}", id);
        OrderVO byId = orderMapper.getById(id);
        if (byId == null){
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }
        if (byId.getStatus() > 2){
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        Orders orders = new Orders();
        orders.setId(byId.getId());
//        if (byId.getStatus().equals(orders.TO_BE_CONFIRMED)){
//            weChatPayUtil.refund(
//                    byId.getNumber(),
//                    byId.getNumber(),
//                    new BigDecimal(0.01),
//                    new BigDecimal(0.01));
//
//            orders.setStatus(Orders.CANCELLED);
//        }
        orders.setStatus(orders.CANCELLED);
        orders.setCancelReason("用户取消");
        orders.setCancelTime(LocalDateTime.now());
        orderMapper.update(orders);
    }

    public void repetition(Long id) {
        List<OrderDetail> byOrderId = orderDetailMapper.getByOrderId(id);
        for (OrderDetail orderDetail : byOrderId) {
            ShoppingCart shoppingCart = new ShoppingCart();
            BeanUtils.copyProperties(orderDetail, shoppingCart);
            shoppingCart.setUserId(BaseContext.getCurrentId());
            shoppingCart.setCreateTime(LocalDateTime.now());
            shoppingCartMapper.insert(shoppingCart);
        }

    }

    /**
     * 订单搜索
     *
     * @param ordersPageQueryDTO
     * @return
     */
    public PageResult conditionSearch(OrdersPageQueryDTO ordersPageQueryDTO) {
        PageHelper.startPage(ordersPageQueryDTO.getPage(), ordersPageQueryDTO.getPageSize());

        Page<Orders> page = orderMapper.pageQuery(ordersPageQueryDTO);

        // 部分订单状态，需要额外返回订单菜品信息，将Orders转化为OrderVO
        List<OrderVO> orderVOList = getOrderVOList(page);

        return new PageResult(page.getTotal(), orderVOList);
    }

    @Override
    public OrderStatisticsVO statistics() {
        OrderStatisticsVO orderStatisticsVO = new OrderStatisticsVO();
        Integer toBeConfirmed =orderMapper.statistics(Orders.TO_BE_CONFIRMED);
        Integer confirmed = orderMapper.statistics(Orders.CONFIRMED);
        Integer deliveryInProgress = orderMapper.statistics(Orders.DELIVERY_IN_PROGRESS);

        orderStatisticsVO.setToBeConfirmed(toBeConfirmed);
        orderStatisticsVO.setConfirmed(confirmed);
        orderStatisticsVO.setDeliveryInProgress(deliveryInProgress);

        return orderStatisticsVO;
    }

    @Override
    public void confirm(OrdersConfirmDTO ordersConfirmDTO) {
        Orders orders = Orders.builder()
                .id(ordersConfirmDTO.getId())
                .status(Orders.CONFIRMED)
                .build();
        orderMapper.update(orders);
    }

    @Override
    public void rejection(OrdersRejectionDTO ordersRejectionDTO) {
        Long id = ordersRejectionDTO.getId();
        OrderVO byId = orderMapper.getById(id);
        if (byId == null){
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }
        if (!byId.getStatus().equals(Orders.TO_BE_CONFIRMED)){
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        Orders build = Orders.builder()
                .id(ordersRejectionDTO.getId())
                .status(Orders.CANCELLED)
                .rejectionReason(ordersRejectionDTO.getRejectionReason())
                .cancelTime(LocalDateTime.now())
                .build();

        orderMapper.update(build);
    }

    public void Admincancel(OrdersCancelDTO ordersCancelDTO) {
        Long id = ordersCancelDTO.getId();
        OrderVO byId = orderMapper.getById(id);
        if (byId == null){
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }
        if (!byId.getStatus().equals(Orders.CONFIRMED)){
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        Orders build = Orders.builder()
                .id(ordersCancelDTO.getId())
                .status(Orders.CANCELLED)
                .cancelReason(ordersCancelDTO.getCancelReason())
                .cancelTime(LocalDateTime.now())
                .build();
        orderMapper.update(build);
    }

    @Override
    public void delivery(Long id) {
        getvalidateOrderStatus(id,Orders.CONFIRMED);
        Orders build = Orders.builder()
                .id(id)
                .status(Orders.DELIVERY_IN_PROGRESS)
                .deliveryTime(LocalDateTime.now())
                .build();
                orderMapper.update(build);
    }

    @Override
    public void complete(Long id) {
        getvalidateOrderStatus(id,Orders.DELIVERY_IN_PROGRESS);
        Orders build = Orders.builder()
                .id(id)
                .status(Orders.COMPLETED)
                .deliveryTime(LocalDateTime.now())
                .build();
        orderMapper.update(build);
    }

    private List<OrderVO> getOrderVOList(Page<Orders> page) {
        // 需要返回订单菜品信息，自定义OrderVO响应结果
        List<OrderVO> orderVOList = new ArrayList<>();

        List<Orders> ordersList = page.getResult();
        if (!CollectionUtils.isEmpty(ordersList)) {
            for (Orders orders : ordersList) {
                // 将共同字段复制到OrderVO
                OrderVO orderVO = new OrderVO();
                BeanUtils.copyProperties(orders, orderVO);
                String orderDishes = getOrderDishesStr(orders);

                // 将订单菜品信息封装到orderVO中，并添加到orderVOList
                orderVO.setOrderDishes(orderDishes);
                orderVOList.add(orderVO);
            }
        }
        return orderVOList;
    }

    /**
     * 根据订单id获取菜品信息字符串
     *
     * @param orders
     * @return
     */
    private String getOrderDishesStr(Orders orders) {
        // 查询订单菜品详情信息（订单中的菜品和数量）
        List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(orders.getId());

        // 将每一条订单菜品信息拼接为字符串（格式：宫保鸡丁*3；）
        List<String> orderDishList = orderDetailList.stream().map(x -> {
            String orderDish = x.getName() + "*" + x.getNumber() + ";";
            return orderDish;
        }).collect(Collectors.toList());

        // 将该订单对应的所有菜品信息拼接在一起
        return String.join("", orderDishList);
    }
    private void getvalidateOrderStatus(Long id ,Integer message) {
        Orders byId = orderMapper.getById(id);
        Integer status = byId.getStatus();
        if (status == null){
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }
        if (!status.equals(message)){
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
    }

    /**
     * 检查客户的收货地址是否超出配送范围
     * @param address
     */
    private void checkOutOfRange(String address){
        Map map = new HashMap();
        map.put("address",shopAddress);
        map.put("output","json");
        map.put("ak",ak);

        //获取店铺的经纬度坐标
        String shopCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);

        JSONObject jsonObject = JSON.parseObject(shopCoordinate);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("店铺地址解析失败");
        }

        //数据解析
        JSONObject location = jsonObject.getJSONObject("result").getJSONObject("location");
        String lat = location.getString("lat");
        String lng = location.getString("lng");
        //店铺经纬度坐标
        String shopLngLat = lat + "," + lng;

        map.put("address",address);
        //获取用户收货地址的经纬度坐标
        String userCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);

        jsonObject = JSON.parseObject(userCoordinate);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("收货地址解析失败");
        }

        //数据解析
        location = jsonObject.getJSONObject("result").getJSONObject("location");
        lat = location.getString("lat");
        lng = location.getString("lng");
        //用户收货地址经纬度坐标
        String userLngLat = lat + "," + lng;

        map.put("origin",shopLngLat);
        map.put("destination",userLngLat);
        map.put("steps_info","0");

        //路线规划
        String json = HttpClientUtil.doGet("https://api.map.baidu.com/directionlite/v1/driving", map);

        jsonObject = JSON.parseObject(json);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("配送路线规划失败");
        }

        //数据解析
        JSONObject result = jsonObject.getJSONObject("result");
        JSONArray jsonArray = (JSONArray) result.get("routes");
        Integer distance = (Integer) ((JSONObject) jsonArray.get(0)).get("distance");

        if(distance > 5000){
            //配送距离超过5000米
            throw new OrderBusinessException("超出配送范围");
        }
    }
}
